TMS320C6421 datasheet(35/59 Pages) TI

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TMS320C6421

Fixed-Point Digital Signal Processor

SPRS346A – JANUARY 2007 – REVISED MARCH 2007

Table 2-17. Host-Port Interface Terminal Functions (continued)

SIGNAL

TYPE(1)

OTHER(2)(3)

DESCRIPTION

ZWT

ZDU

NAME

NO.

HDS1/MRXD1/

IPU

This pin is multiplexed between HPI, EMAC (MII), and GPIO.

I/O/Z

GP[79]

DVDD33

In HPI mode, this pin is host data strobe input 1 HDS1 (I).

This pin is multiplexed between HPI, EMAC (MII), and GPIO.

HRDY/MRXD2/

IPU

I/O/Z

In HPI mode, this pin is host ready output from DSP to host

GP[80]

DVDD33

(O/Z).

This pin is multiplexed between HPI, MDIO, and GPIO.

HCS/MDCLK/

IPU

I/O/Z

In HPI mode, this pin is HPI active low chip select input HCS

GP[81]

DVDD33

(I).

HINT/RXD3/

IPU

This pin is multiplexed between HPI, EMAC (MII), and GPIO.

I/O/Z

GP[82]

DVDD33

In HPI mode, this pin is host interrupt output HINT (O/Z).

HAS/MDIO/

IPU

This pin is multiplexed between HPI, MDIO, and GPIO.

I/O/Z

GP[83]

DVDD33

In HPI mode, this pin is host address strobe HAS (I).

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